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μPD548 (μCOM-42) - NEC
NEC μCOM-42 | |
Manufacturer | NEC |
Model Number | μCOM-42 |
Part Number | μPD548 |
Introduction | 1977 (launch) |
General information | |
Family | μCOM-42 |
Clock | 100 kHz-200 kHz |
Microarchitecture | |
Microarchitecture | μCOM-42 |
Technology | pMOS |
Word size | 4 bit 0.5 octets
1 nibbles |
Electrical | |
Op. Temp | -10 °C – 70 °C |
Supply VDD | -10 V |
Supply VSS | 0 V |
Memory | |
RAM | 48 B 4.8e-5 MB (96x4 bit)
0.048 kB 384 b 4.8e-8 GB |
ROM | 2.4 kB 0.0024 MB (1920x10 bit)
2,400 B 19,200 b 2.4e-6 GB |
Stack | 4 levels |
Pins | |
Pins | 42 |
IRQ lines | 2 |
I/O ports | 1 |
Input ports | 1 |
Output ports | 12 |
Packaging | |
Package | DIP42 (DIP) |
The μPD548 or μCOM-42 is a 4-bit microcontroller introduced in 1977 by NEC. This was the first model of the μCOM-42 family. This microcontroler was designed specifically for electronic cash registers, point of sales, and electronic scales.
The μPD548 is designed to control 8-digit display, ECR printers, and 8x4 matrix keyboard.
Contents
Design[edit]
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Instruction Set[edit]
- Main article: μCOM-42 ISA
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Documents[edit]
See also[edit]
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Facts about "μPD548 (μCOM-42) - NEC"
family | μCOM-42 + |
first launched | 1977 + |
full page name | nec/μcom-42/μpd548 + |
instance of | microcontroller + |
manufacturer | NEC + |
max operating temperature | 70 °C + |
microarchitecture | μCOM-42 + |
min operating temperature | -10 °C + |
model number | μCOM-42 + |
name | NEC μCOM-42 + |
package | DIP42 + |
part number | μPD548 + |
pin count | 42 + |
ram | 4.8e-5 MB (0.048 kB, 48 B, 384 b, 4.8e-8 GB) + |
ram breakdown | 96x4 bit + |
rom | 0.0024 MB (2.4 kB, 2,400 B, 19,200 b, 2.4e-6 GB) + |
rom breakdown | 1920x10 bit + |
technology | pMOS + |
word size | 4 bit (0.5 octets, 1 nibbles) + |